Hi, I am trying out some DB stress tests on both i40e and ixgbe. The stress test that I use is rds-stress (http://linux.die.net/man/1/rds-stress), and I can list out the entire set of steps and parameters that I am using to run this if that info is interesting.
My test bed is a pair of X5-2 (Haswell) servers, each with a Niantic (X540-AT2) card and a Fortville card. The Niantic/fortville cards are connected back-to-back, so I essentially have a 10G connection and a 40G connection. Everything else (kernel, RDS modules, stress test and parameters) remaining the same, I get the expected throughput on the 10G connection, but the i40e connection goes through a lot of TX errors that result in console messages like this: i40e 0000:81:00.0: TX driver issue detected, PF reset issued i40e 0000:81:00.0 eth2: adding 68:05:ca:30:db:30 vid=0 i40e 0000:81:00.0: TX driver issue detected, PF reset issued i40e 0000:81:00.0 eth2: VSI_seid 390, Hung TX queue 32, tx_pending: 82, NTC:0xeb, HWB: 0xeb, NTU: 0x13d, TAIL: 0x13d i40e 0000:81:00.0 eth2: VSI_seid 390, Issuing force_wb for TX queue 32, Interrupt Reg I understand these are "mdd errors", but how can I find out what triggered these errors, any hints? The other data-point here is that if I disable tso, and fall back to gso, there are no tx errors, and throughput matches the 10G connection (for the same set of test parameters). Please let me know if there is any other info that would help. The kernel is a 4.5.0-rc2 kernel. Info for the i40e card is # ethtool -i eth3 driver: i40e version: 1.4.8-k firmware-version: 5.02 0x80002285 0.0.0 bus-info: 0000:81:00.1 : Thanks in advance, --Sowmini ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired